[Openstack-stable-maint] Stable check of openstack/zaqar for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/79eff56974cd4b8ca3d0179cd6dd42... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cb54596dbee4448cbdfa17122f6e1327 : SUCCESS in 5m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b4099932013548998235d8622b45863e : SUCCESS in 13m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c83421fb657b41758f8d70a7943f0e49 : FAILURE in 10m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/23d0e98df4ef40c8a42ef1dcd860487e : SUCCESS in 13m 15s